Classical "Counter-intelligence" wisdom boiled it down to the acronym "MICE". - Money - Ideology - Compromise/Coercion - Ego/Extortion Apple has about 164,

Classical "Counter-intelligence" wisdom boiled it down to the acronym "MICE". - Money - Ideology - Compromise/Coercion - Ego/Extortion Apple has about 164,000 employees - it's difficult to hire for the skills you want and also avoid any potential for these motivators. Especially when the CIA itself notes that: > While problematic personality features are essential, they are not sufficient to provoke espionage. The majority of people who have some, or even many, of the personality features described above will never engage in criminal conduct. This quote informs us that the optimum rate of leaks is not "zero" because you'd be throwing out a lot of babies with the bathwater. Basic overview: https://theconversation.com/how-ordinary-people-are-convinced-to-become-spies-166688 https://theconversation.com/how-ordinary-people-are-convince... More details on personality dysfunctions which lead to leaks: https://www.cia.gov/static/30b273c621d0896f13104ff48840b68f/psychology-of-espionage.pdf https://www.cia.gov/static/30b273c621d0896f13104ff48840b68f/... > In his memoir Carney quotes himself as asking the OSI officers arresting him “What took you so long?” (Against All Enemies, 592); he also claims to have made several attempts during the arrest to assert rights as a German citizen but was told to shut up. FBI Special Agent Robert Hanssen also contemptuously asked the FBI colleagues arresting him, “What took you so long?” Both Hanssen and Carney demonstrated the reflexive grandiosity described in the personality section of this article in this sarcastic comment. When he was arrested, Ames said, “You’re making a big mistake! You must have the wrong man!” demonstrating the automatic cunning and slipperiness characteristic of psychopaths.